You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!
If you have any problems with the registration process or your account login, please contact us. Looking forward to seeing you in the forums and talking about AATVs!
I re-powered my Big Max with a 420cc engine so I needed to switch to a 4 cycle clutch setup. I'm running the comet 40 series because price was way lower than some other options. The driven pulley was available in 7/8 bore but comes with an internal key . I had to use an arbor press and broach but was able to make a keyway without removing the internal key and the setup works great so far. Now what to do with the rotax 503 hmmm